10pcs/lot Ball Bearing Iron Copper Base Inner Diameter 2/4/5mm Ball Diameter 5/7.55/8/11mm Height 3/5/7mm Small Bearing gear

10pcs/lot Ball Bearing Iron Copper Base Inner Diameter 2/4/5mm Ball Diameter 5/7.55/8/11mm Height 3/5/7mm Small Bearing gear

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